Thanks Peter 

I did not know the pictures where anymore available due to photobucket is hosting them for FREE and did a lot of baninng all users as they decided to want to charge all for their service. The effect being a speedometer showing instead. It seems their policy changed back to having a FREE option.

Only selected pictures where used but the rest are still available to see: 

Do you know if the 6000 is bridgeable?  That way I could get more power than the BM8000 - in theory - I'm thinking if I use a splitter for the turntable and the MP3 it might work.  I would have one volume control for each channel but what's the difference? 

Would that work?

Which turntable are you using?

I'm thinking you could use a splitter lead either splitter on phono to the two phono inputs and splitter on MP3. Or tape out on one BM (with phono and MP3 connected) to tape in on the other. Or there maybe a away of taking the Audio out to the Audio in using the 4 pin sockets on the back of them - but not sure about that

I wouldn't do that. The Beosystems (in my opinion) are best setup as complete systems on their own. They are designed to function together both in play and in looks. Back in the 80's I passed on the Beomaster 8000 (and the Beosystem 8000) because I wanted more options.  I briefly considered some options like your are pondering regarding connecting up non-B&O components with it. In the end I bought the Beogram 8002 but combined it with a system of Yamaha separates, Yamaha NS2000 speakers and a Nakamichi Dragon. It is a great system and I still have it. In the last few years I have been collecting and restoring a number of my favorite audio components that I always wanted. That got me infected with the Beovirus and I have settled into primarily B&O components. As I have posted here and on the Beolover Blog, I really appreciate the Beosystem components now.  They work so wonderfully together.

My suggestion is to design a listening area for your Beosystem(s). Maybe rotating systems as suggested earlier. It sounds like you are attempting to fill a really large room though so I would make your listening area half what you are currently trying. A nice swivel, recliner right in the middle of four MS150s should do the trick 😕. I would also keep the MS150s paired with either your Beomaster 8000 or 6000 because part of the Beosystem experience is the interconnection of the components. As good as the Beomaster 4400 is (and it is a great receiver) I would keep it paired with a nice Beogram 400x turntable and some Beovox M100s or M75s.

-sonavor